Robert Palmer Huntington Jr. (January 15, 1869 – March 12, 1949) was an American tennis player.

He was the grandson of New York born Indiana pioneer Judge Elisha Mills Huntington.

Huntington, who was independently wealthy, owned 300 acres on the Hudson River at Staatsburg, New York where he designed and built his residence, Hopeland House, a thirty-five room Tudor Revival mansion(demolished).

In addition, he designed his own house in rural Hampton County, South Carolina; his house there at Gravel Hill Plantation, a National Register of Historic Places property, is his only known work south of New York.

[3] In 1891 and 1892 he won the men's doubles title at the U.S. National Championships together with compatriot Oliver Campbell.